<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8" />
		<title></title>
	</head>
	<body>
		<script type="text/javascript">
			var arr=["aa","bb","cc","dd"];
			for (var i=0;i<arr.length;i++) {
				console.log(i+"-----"+arr[i]);
			}
		</script>
	</body>
</html>
